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12276 IJzer (1990 WW1)
Classification: Main-belt Asteroid          SPK-ID: 2012276
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1433457279711251 3.3823e-08  
a 2.687969946914457 1.088e-08 au
q 2.302660938109498 9.4123e-08 au
i 7.024499843955041 3.4365e-06 deg
node 152.9004382977322 2.8092e-05 deg
peri 230.3831139326767 3.0521e-05 deg
M 279.8206093680192 1.3901e-05 deg
tp 2459359.005060599699
(2021-May-24.50506060)
6.3254e-05 TDB
period 1609.663291259954
4.41
9.7733e-06
2.676e-08
d
yr
n .2236492575526229 1.3579e-09 deg/d
Q 3.073278955719417 1.244e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1980  
   data-arc span      10861 days (29.74 yr)  
   first obs. used      1990-11-11  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46162  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:32:20  

Additional Information
 Earth MOID = 1.31272 au 
 Jupiter MOID = 2.40313 au 
 T_jup = 3.348 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5   n/a MPO435816  
diameter diameter 5.883 km 0.282 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.223   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12276 IJzer           Discovered 1990 Nov. 18 by E. W. Elst at the European Southern Observatory.
The IJzer is a river in Flanders. With its source in Northern France and a total length of 78 km, it flows gently through France and West Flanders, finding its way to the North sea near the city of Nieuwpoort.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-03-16Last Updated: 2014-03-21

Alternate Designations
 1990 WW1 = 1992 DU6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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